Device for displaying printed or other matter employed in sight testing and which can also be used as a mirror



I P. STEVENSON. JR

DEVICE FOR DISPLAYING PRINTED OR OTHER MATTER EMPLOYED IN 51611! TESTINGAND WHICH CAN ALSO BE USED AS A MIRROR Filed March 25, 1924 2Sheets-Sheet 1 Refer 579224972302? flflo wey STEVENSON. JR

DEVICE FOR DISPLAYING P TED OR OTHER MATTER EMPLOYED IN SIGHT TB WEI? ASA IIR STING AND AN ALSO BE USED ROR d March 25, 1924 2 Sheets-Sheet 2 8F IG. 6.

1 ,1 a 2 lo @M mg [bye/7701* jeler ,J'Zewareaon 172' I Patented Jan. 19,

. 1 rmesmvmioa tag-Q- Etimusqa, j

pfin pplicatiori'filled vllllarch. 25;l i'aza x'xseriaranvo jsezmf f iTo all wivom'z't mag mmoral: 7

Be it known that I, PETER .ST'nviiNsON, Junior, a subject of: the Kingof G1eat"Brit-:; 1 a1n1 and lreland, residingat '7 Forrest Road,

,Edinburgh, 7 county of Mi'dlothian; v(Scot.-

land, have invented certain new and useful lmprovements 111;- a defvlce.-;for displaying "printed or other matter; emp16y e r Sight "testingand' whichscan alsobe used as anilrl' IidLIydo hereby'declar'eg' thatthe follow- T wing is a full, clear, and. exactfdescription of the iinvention, such as Twill enable others skilled; in ther -art to whichitappertains *to m'ake a'nd use the same.

My invention has" for its *object in' aa simgThe -back,ofthe framezmaybeornamented H as desired;omanrangedto hold sight-testing" 1 "Qh tS,photographs;bathe-like; r In orderthat my said invention and the *pleand ine'xpens'ive manner; to pnovide device for conveniently displaying,atvany suit-j able angle,'printed orl other matter used in connectionwith sight tes't-in'g. The device;

.can also be used as a-mirron-with-or without the sight testingmatter.

In carrying out 11'1y;lI1V6I1t-lO11 the device, wh ch maybe made of anysu table'materlal,

consists of a frame divided transversely in-j totwo parts: The object ofdividing the", frame into two parts, is to vfacilitate the re- 7 movalof the mirror: and its replacement by another mirror or the like. Theadjoining, -ends, of each part, have an outwardly pro-j jectingmemberf'consisting of a half screw,

and so that when the adjoiningends of the 1 frame are brought together,a complete screwed member is formed'on each side of,

the frame. Thetwoparts of theframe are held in position by an internallyscrewed sleeve adapted to engage with each screwed member. The outer endof eachinternally screwed sleeve engages'with a knurled screw,

or the like, having a plainshoulder, and the shoulderyon each screw,forms a bearing for mounting it on a pedestal, so that the frame can beturned through its horizontalaxis to any convementangle.

r The pedestal consists of two" upright members, detachably'secured totwo horizontal 7 members by-nuts or the like, so tltgf when not in useand detached 'f'romthe frame, the two 7 horizontal members can becollapsed, likea' parallel ruler, whilst atthefsame time [the uprightmembers are turned, so that the space occupied, in one direction, a onlyamounts to the combined breadth offthe two" ,horizontal members.

V f l v t p, 9 that p t; f e nhup g t .wherever they are repeated. V v II 'As'shown in the'd awings,the device'con sists' of a framedivided intotwolpartsl, and 2, the adjoining'endsof each part having an knitwardlyprojecting member con-:95

sisting respectively of; a halfscrew 3,] 4

and 5, 6, so that when the adjoining endsof;

I member, which theframe supported,

may s bex nia'de i 'detaohable *Eoryekample ;qit may bEtYPIiOVlClGd."'withfasidependingi part "1 which is'finsentedrin fa socket. in theupright me-mber,5-the depending *part having ,a-icirj v a .r v f'"-engages a} ::-pin, inserted- ,in an aperture at rlghtjiangles ktoathesocket. i

cuinferentiahgroove formed; in it with which Where-the dev'ices"intendedto beasts anhanging-mirror};awbriacket or 'alate "is fixed toonefiof the-'upri'ght'imembers; or; thei'pedes ta-l so that it can-beturned;O u"twards' to enage; 'w-ithza nailorvthe like on the wall,% winthis 'p'osition"thefininifor can be turn-ed s vertic'at axis? to anyconv nient hrough manner of performing the same ma be sheetsofexplanatory drawingsbto be here:

tion. I I

'inafter referred to'in describing mylinvene shows the deviceinfahanging position, and

a sideelevation of a strap or cross bar. In

properly understood, Iihereuntoappend two I these drawings the samereference numerals are used to mark the same or like parts theframe arebrought together, a complete screwed-member is formed on'each side ofthe frame. The two parts'l, and 2, fof' the frame, are held inpositi'onby anfinternally screwed sleeve,7,fand 8, adapted to'engage with eachscrewed member, as shown in Figure 4. 'The outer end of each internallyI p v screwed sleeve 7 ,tancl; 8, engages" with a knurled headed; screw9, and '10, having a r ,1 plain shoulder 11, and the shpulder, on each I[s lw 5ml l a bearmg formant;

mately through a quarter of a revolution, as that the space occupied inone direction,

only amounts tothe combined breadth of the two horizontal members 14-,and 15. To enable the collapsing action to be effected without removingthe frame, the top part 17, and 18, of each upright member 12, and

I 13, in which the frame'is supported, is made detachable, and isprovided with a dependlng part 19, which is inserted 111 a socket 20, inthe upright member 12, (Figure 4), said depending part having acircumferential groove 21, formed in it with whiehengages a pin 22,inserted in an aperture, in the up right member 12, at right angles tothe socket 20. In this way the main portion of each upright member 12,and 13, can be turned without turning the top parts 17, and

' 18, in which the frame is supported.

Where the device is intended to be used as a hanging mirror (Figure 3)it is provided with a strap or cross bar 23,, provided with lugs 2%, and25, which engage respectively in elongated apertures 26, and

scribed, it can be simply and expeditiously collapsed, or dismantled,thus occupying a comparatively small space, and eliminating risk ofbreakage, and readily re-erected.

hat I claim is The herein described device comprising a frame, uprightmembers adjacent said frame, heads detachably mounted on said uprightmember, bearings carried by said heads, projections on said frame,screwed sleeves receiving said projections, Ineansfor supporting saidprojections consisting of a member connected to each sleeve and having aplain shoulder adapted to project into one of said hearings in the headof each upright member, whereby the uprights may turn independently ofsaid heads.

In witness whereof I have hereunto set my hand.

PETER STEVENSON, JUmoR.

